rock oyster

noun

Definition of rock oyster

: any of various oysters or other bivalves occurring attached to rocks:
a : a mollusk of the genus Hinnites represented on the west coast of North America by a large flattened bivalve (H. giganteus)
b : a mollusk of Chama or related genera

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More About rock oyster

Dictionary Entries Near rock oyster

rock ouzel

rock oyster

rock painting

See More Nearby Entries 

Statistics for rock oyster

Cite this Entry

“Rock oyster.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rock%20oyster. Accessed 3 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Name that Thing: Flower Edition

True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!